i'm implementing a project with XCODE 5 and storyboard. I have added a view that is a UIPageViewController and when i alloc the first page (for this pageviewcontroller) the view appears normally but from second page the view appears under the navigation bar. What is the matter?
If i set this property
self.navigationController.navigationBar.translucent = NO;
for the view displayed the problem is solved but when i go back from Page View Controller to previous View, the buttons on it are shifted down.
Why? What is the solution?
Furthermore if i set translucent = NO the views displayed in storyboard are different from views displayed in my app (the views are not shifted in storyboard).
I can't post images because i'm not authorized.
This is the code of my PageViewController
- (void)viewDidLoad
{
[super viewDidLoad];
variabiliGlobali = [foaGlobalVariable sharedInstance];
variabiliGlobali.giornataCalID = 1;
numeroGiornate = [variabiliGlobali.calendario count];
self.dataSource = self;
foaGiornataViewController *initialView = [[foaGiornataViewController alloc] init];
// Do any additional setup after loading the view.
[self setViewControllers:[NSArray arrayWithObject:initialView]
direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:NULL];
}
The foaGiornataViewController is a view that doesn't exist on storyboard but is only a objective-c class.
Thanks in advances.
I have solved. I have setted opaque navigation bar for my Navigation Controller on storyboard.
Related
How to let child view controller modify navigation controller?
I am faced with this problem right now, and have not been able to find a solution that works, let alone one that works well.
Basically, right now I have a UINavigationController that contains a UITableViewController with a search bar in the navigation bar. So far so good - everything works well.
However, I would like to show some custom views between the navigation bar and the top of the table view at times. To do this, I figured it would be best to create another view controller (let's call it the ContainerViewController), which is presented by the navigation controller. This container view controller holds the table view controller as a child, and can insert any custom view it wishes to. The view controller hierarchy should look like this:
UINavigationController
ContainerViewController
UITableViewController (with UISearchDisplayController)
Now I am faced with a problem, since the search bar of the UISearchDisplayController should be displayed in the navigation bar (by calling didSetupSearchDisplayController), but I obviously want all logic pertaining to it kept in the UITableViewController. I need the container view controller to sort of act as a go-between here. I have tried to figure this out, but haven't managed a solution yet.
Here is how I instantiate the table view controller and add it as a child in the container view controller.
- (void)viewDidLoad {
[super viewDidLoad];
// Load view controller from storyboard
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
self.contentViewController = [storyboard instantiateViewControllerWithIdentifier:#"MyListViewController"];
self.contentViewController.view.translatesAutoresizingMaskIntoConstraints = NO;
// Add its view to the content view
[self addChildViewController:self.contentViewController];
[self.container addSubview:self.contentViewController.view];
[self.contentViewController didMoveToParentViewController:self];
// Set up constraints
[self.contentViewController.view autoPinEdgesToSuperviewEdgesWithInsets:UIEdgeInsetsZero];
}
In the child view controller, I have noticed that self.navigationController is nil in viewDidLoad but not in didMoveToParentViewController. So the following works:
- (void)didMoveToParentViewController:(UIViewController *)parent {
// Hide separator below navigation bar
self.navigationController.navigationBar.clipsToBounds = YES;
}
But I cannot set the search bar to display in the navigation bar, nor can I set the navigation bar title (with self.title = ...) from within the child view controller.
Would appreciate any help.
EDIT: Here is some code I use in the UITableViewController (the contained view) to create the search display controller:
UISearchBar *searchBar = [[UISearchBar alloc] init];
self.mySearchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
// Show search bar in navigation bar (instead of in its own bar underneath)
self.searchDisplayController.displaysSearchBarInNavigationBar = YES;
// Set self as delegate to search display controller and its table view
self.searchDisplayController.delegate = self;
self.searchDisplayController.searchResultsDelegate = self;
I have tried doing this both in viewDidLoad, where the self.navigationController is nil, and in didMoveToParentViewController, where the navigation controller exists, but it does not seem to matter. My guess is that the displaysSearchBarInNavigationBar magic happens after the child view is instantiated but before it is added as a child view (and thus gets access to the navigation controller).
can you use
self.parentViewController.navigationController
to get the reference to the navigation controller from within the container view?
This may help you find your answer. We use this to set the title of our navigation controller
self.navigationItem.title=#"Name of view goes here";
You should be able to use self.navigationItem to get a handle to the navigation bar.
I am writing an application with help screens. As per my requirement I need to show the help screens when the view appears for the first time and I am placing the code on the tabbar controller class as (void)viewDidLoad:
{
[super viewDidLoad];
XDKWalkthroughController *sc = [[XDKWalkthroughController alloc]
initWithView:self.view];
[self addChildViewController:sc];
[self.view addSubview:sc.view];
sc.delegate = self;
[sc start];
}
When I am placing this code I am getting one more tabbar item along with existing tabbar item. How to avoid that in my case?
And same thing when I placed in the first view i.e in the first tab view controller view did class. Both navigation bar and tabbar are pushing the child view back.
I have tried these two scenarios, please help me with the possible solution.
I am facing problem with Accessibility read order issue.
I have a UIViewController in that 3 UIViewControllers added as childViewControllers.
NavigationController is added to the MainViewController.
When I turn on the accessibility, VO start reads from the childviewcontroller subviews and then moving to NavigationController. After reading the navigation bar Vo will not move down.
- (void)viewDidLoad
{
[super viewDidLoad];
self.suppressCart = YES;
[self setupNavigationItems];
// Set up the embedded navigation controller for the delivery/payment/review
// subviews
self.stepController = [[UINavigationController alloc] init];
self.stepController.delegate = self;
self.stepController.navigationBarHidden = YES;
// Add it to this view controller as a child
// Note: do not call begin/end appearance transitions
[self addChildViewController:self.stepController];
[self.view addSubview:self.stepController.view];
self.stepController.view.frame = CGRectOffsetAndShrink(self.view.bounds, 0, TargetBreadcrumbButtonHeight);
}
self.stepController is used to push the view controllers with in the MainViewController.
Did any one face this issue before. Need help to resolve this.
Is there any way to make VO reads every element in Infinite Loop??
Thanks,
Rakesh
I'm currently trying to make a small demo app which is supposed to present 2 views at the same time :
- The first one, BaseViewController, is a classic controller with 2 buttons
- The second one, OverViewController, is launch on top of baseView and contains
a last button, and is supposed to be transparent and sending the touch controls
to the first one
Both viewController have their xib. To make it clear : rootView --> baseView + overView (transparent)
My problem is NOT to send the control events from the 2nd view to the first, but to make the 2nd view transparent and functionnal.
Here's what I've tried so far :
1) ------------ Presenting the two view controllers ------------
From the app rootViewController :
- (IBAction)buttonClicked:(id)sender
{
OverViewController *overVC = [[OverViewController alloc] init];
[overVC presentViewControllerFrom:self];
}
From OverViewController :
- (id)init
{
self = [super init];
if (self)
{
self.base = [[BaseViewController alloc] initWithNibName:#"BaseViewController" bundle:nil];
}
return self;
}
I made a custom method to make overView present the baseView before showing up.
- (void)presentViewControllerFrom:(RootViewController *)sender
{
[sender presentViewController:self.base animated:NO completion:nil];
self.view.backgroundColor = [UIColor colorWithWhite:0.0 alpha:0.0];
self.view.opaque = NO;
[self.base presentViewController:self animated:YES completion:nil];
}
At this point, the baseView appears, followed by the overView. The button of overView work correctly. Great ! But then the background of overView doesn't show what's supposed to be behind and stays black. No alpha transparency.
2) ------------ Presenting the baseView and adding overView as a subview ------------
From the app rootViewController (same than the one before) :
- (IBAction)buttonClicked:(id)sender
{
OverViewController *overVC = [[OverViewController alloc] init];
[overVC presentViewControllerFrom:self];
}
From OverViewController (not presenting but adding subview) :
- (void)presentViewControllerFrom:(RootViewController *)sender
{
[sender presentViewController:self.base animated:NO completion:nil];
self.view.backgroundColor = [UIColor colorWithWhite:0.0 alpha:0.0];
self.view.opaque = NO;
[self.base.view addSubview:self.view];
}
This time, the transparency is great but any touch on the overView button cause a EXC_BAD_ACCESS to show up.
There I am, wondering how to do this. Any help will be greatly appreciated ! :)
Don't use a combination of presenting a view controller and adding subviews. Choose 1. It should be subview that you choose. It can be owned by another controller and that controller should probably be added as a child view controller.
In your first situation you see black because iOS is removing the (now expected to not be visible) view from the view hierarchy. So your view is transparent but what you expect to be behind it is no longer there.
Your second situation is probably just resulting in an invalid view hierarchy somewhere.
The overview controller should not own the base controller. The base controller should be shown and then the overview controller view added as a subview.
I am trying to display a modal viewController in an iPad app using the UIModalPresentationFormSheet view style. I am looking to produce something similar to the Mail app's new message UI/animation.
There are two things that are not behaving correctly:
The modal viewController that is presented always animates to y=0, i.e. to the very top of the
view and not some pixels below the status bar as it does in the mail app.
The documentation says:
UIModalPresentationFormSheet The width
and height of the presented view are
smaller than those of the screen and
the view is centered on the screen. If
the device is in a landscape
orientation and the keyboard is
visible, the position of the view is
adjusted upward so that the view
remains visible. All uncovered areas
are dimmed to prevent the user from
interacting with them.
However, in my case there is no dimming and I can still interact with the parentView below the modalViewController.
The controller that presents the modalView I do this:
AddNewItemViewController *newItemViewController = [[AddNewItemViewController alloc] initWithNibName:#"AddNewItemViewController" bundle:nil];
[self presentModalViewController:newItemViewController animated:YES];
[newItemViewController release];
In the viewController being presented I do this:
- (void)viewDidLoad {
[nameField becomeFirstResponder];
[self setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self setModalPresentationStyle:UIModalPresentationFormSheet];
[super viewDidLoad];
}
I hope someone can help me out.
Is there some other properties I need to set on the parent and modalViewController?
Is the viewDidLoad not the right place to do this setup?
Thanks in advance:)
You set the transition and presentation styles when you create the modal view, before you call presentModalViewController. Remember, the view that creates the modal view 'owns' that object. You want the owner to set these properties because you might implement this modal view elsewhere in the app and want different transition or presentation styles. This way, you set it each time as appropriate.
AddNewItemViewController *newItemViewController = [[AddNewItemViewController alloc] initWithNibName:#"AddNewItemViewController" bundle:nil];
newItemViewController.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:newItemViewController animated:YES];
[newItemViewController release];
You're right in calling becomeFirstResponder in viewDidLoad.